chore: remove checkout step for base branch #15062

Job	Run time
Setup PHP Version for Code Coverage	3s
Others (8.5) / Sanity Tests	8m 53s
Others (8.2) / Sanity Tests	3m 13s
Others (8.4) / Sanity Tests	1m 26s
Others (8.3) / Sanity Tests	7m 59s
SeparateProcess (8.3) / tests	2m 36s
SeparateProcess (8.5) / tests	2m 1s
SeparateProcess (8.4) / tests	2m 6s
SeparateProcess (8.2) / tests	2m 12s
CacheLive (8.2) / Cache Live Tests	1m 22s
CacheLive (8.3) / Cache Live Tests	1m 3s
CacheLive (8.5) / Cache Live Tests	1m 3s
CacheLive (8.4) / Cache Live Tests	1m 1s
DatabaseLive (8.3, SQLSRV, 8.0) / tests	10m 13s
DatabaseLive (8.5, OCI8, 8.0) / tests	7m 36s
DatabaseLive (8.5, SQLite3, 8.0) / tests	1m 29s
DatabaseLive (8.4, OCI8, 8.0) / tests	8m 6s
DatabaseLive (8.4, SQLite3, 8.0) / tests	2m 10s
DatabaseLive (8.5, MySQLi, 8.0) / tests	3m 29s
DatabaseLive (8.2, SQLSRV, 8.0) / tests	6m 56s
DatabaseLive (8.3, SQLite3, 8.0) / tests	1m 18s
DatabaseLive (8.2, OCI8, 8.0) / tests	8m 21s
DatabaseLive (8.2, MySQLi, 8.0) / tests	5m 3s
DatabaseLive (8.5, Postgre, 8.0) / tests	1m 46s
DatabaseLive (8.3, MySQLi, 8.0) / tests	3m 15s
DatabaseLive (8.2, MySQLi, 5.7) / tests	3m 6s
DatabaseLive (8.5, SQLSRV, 8.0) / tests	4m 53s
DatabaseLive (8.4, MySQLi, 8.0) / tests	3m 26s
DatabaseLive (8.4, SQLSRV, 8.0) / tests	6m 17s
DatabaseLive (8.3, Postgre, 8.0) / tests	2m 19s
DatabaseLive (8.2, Postgre, 8.0) / tests	3m 5s
DatabaseLive (8.3, OCI8, 8.0) / tests	7m 33s
DatabaseLive (8.4, Postgre, 8.0) / tests	1m 49s
DatabaseLive (8.2, SQLite3, 8.0) / tests	2m 14s
Upload coverage results to Coveralls / coveralls	46s
	2h 10m 8s

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